A graph-search based approach to bpel4ws test generation

Abstract—Business Process Execution Language for Web Services (BPEL4WS) is a kind of concurrent programming languages with several special features that raise special challenges for verification and testing. This paper proposes a graph-search based approach to BPEL test case generation, which effectively deals with BPEL concurrency semantics. This approach defines an extension of CFG (Control Flow Graph)-BPEL Flow Graph (BFG)- to represent a BPEL program in a graphical model. Then concurrent test paths can be generated by traversing the BFG model, and test data for each path can be generated using a constraint solving method. Finally test paths and data are combined into complete test cases. Keywords-BPEL; test generation; test path generation; graph-search I